package com.example.tests;

import static org.junit.Assert.assertThat;
import static org.hamcrest.Matchers.*; 
import java.util.Random;
import org.testng.annotations.Test;
import com.example.utils.SortedListOf;

public class GroupModificationTests extends TestBase{
	
	@Test(dataProvider = "randomValidGroupGenerator")
	public void modifySomeGroup(GroupData group){
		// save old state
		SortedListOf<GroupData> oldList =
				new SortedListOf<GroupData>(app.getHibernateHelper().listGroups());
	    
	    Random rnd = new Random();
	    int index = rnd.nextInt(oldList.size()-1);
	    //actions
		app.getGroupHelper().modifyGroup(index, group);
				
		//save new state 
		SortedListOf<GroupData> newList = app.getGroupHelper().getGroups();
	    //compare states 
		assertThat(newList, equalTo(oldList.without(index).withAdded(group)));
			
	}
	

}
